CMMG Resolute 100 Mk57 5.7x28mm
5.7x28mm cal., radial delayed blowback operation, 16.1 in. CM barrel w/SBN finish, A2 compensator, FN Five-seveN magazines, SST, 6-pos. M4 buttstock, RML15 M-LOK free floating handguard, A2 pistol grip, forged aluminum Mk57 receivers, Type...